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This section is to assist in the design and
development of your proposed printed product and compile an accurate
print quotation enquiry.
Folding & grain direction
Grain direction
Grain direction should be understood as it is often
crucial for the success of the final job. A paper's grain direction
is simply the direction in which the paper fibres were travelling
whilst on the paper machine. This is described as machine direction
(md). The direction travelling against the grain is known as cross
direction (cd). Paper should normally be printed with the grain
direction running across the printing machine as paper stretches
less in the grain direction, giving more stability. After printing,
the grain direction is still important and it is this finishing
aspect that is replicated when making a dummy. For book purposes
the grain must run from head to tail.
Creasing & Folding
Usually sheets that are to be folded need to be creased
in the direction of the grain, thus giving a sharper, cleaner crease.
Creasing paper prior to folding will always produce the best folds
and is especially recommended for heavier weight papers and boards.
When a job is being commercially finished it is creased around a
'forme' or a rule and the width of the rule is dictated by the thickness
of the paper. The score width should never be wider than the paper.
It is almost impossible to replicate a machine made
crease when making a dummy, but the overall presentation looks much
neater if at least an attempt is made to score the paper or board.
The handle of a metal scalpel is an efficient tool for this purpose.
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